1295560

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{661}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 3396060

約数和(自身を除く): 2100500

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 661, 980, 1322, 1960, 2644, 3305, 4627, 5288, 6610, 9254, 13220, 18508, 23135, 26440, 32389, 37016, 46270, 64778, 92540, 129556, 161945, 185080, 259112, 323890, 647780, 1295560]

約数ペア:

[(1, 1295560), (2, 647780), (4, 323890), (5, 259112), (7, 185080), (8, 161945), (10, 129556), (14, 92540), (20, 64778), (28, 46270), (35, 37016), (40, 32389), (49, 26440), (56, 23135), (70, 18508), (98, 13220), (140, 9254), (196, 6610), (245, 5288), (280, 4627), (392, 3305), (490, 2644), (661, 1960), (980, 1322)]